The problem of toxicity is considered. It is concluded that many myths exist about the subject of poisons and toxins. A major one is that a dichotomy exists between poisonous and nonpoisonous chemicals when actually nothing is toxic in small levels, and all chemicals are toxic in high amounts. Further, most all chemicals which have a high level of toxicity have an important function in life, and because compounds can be used in a harmful way does not negate their importance when used appropriately. It is not the compound that is the problem, but the use.